I think an under studied stat is the lost faceoff, and a goal against a minute later. Some teams want to counter. Score off of odd mans. Some players dominate in the those situations, and dare I suggest Kuzy is one of those types.
Losing a faceoff will far more often lead to play eventually going the other way, than a quick goal against. What is our scorski rate on counters.
I think previous studies showed that a good vs average faceoff guy only leads to 3 more goals per year. When your worst faceoff guy is a top 10 offensive stud, it can certainly still help to secure a cup. Proof is in the pudding.